// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

package task

import "context"

// Func wrap a closure.
type Func struct {
	name string
	fn   func(ctx context.Context) error
}

// NewFunc create a Func task
func NewFunc(name string, fn func(ctx context.Context) error) *Func {
	return &Func{
		name: name,
		fn:   fn,
	}
}

// Execute implements the Task interface
func (m *Func) Execute(ctx context.Context) error {
	return m.fn(ctx)
}

// Rollback implements the Task interface
func (m *Func) Rollback(_ context.Context) error {
	return ErrUnsupportedRollback
}

// String implements the fmt.Stringer interface
func (m *Func) String() string {
	return m.name
}
